Car with a sun roof provided with sealing gaskets

ABSTRACT

A car having: a frame provided with two external vertical posts, which are arranged facing each other on opposite sides of the car, and two internal vertical posts, which are arranged between the two external vertical posts and at a given distance from the external vertical posts; a passenger compartment; a sun roof, which is supported by the frame and can be set in an open position or a closed position with respect to the passenger compartment; a housing for containing the sun roof when the sun roof itself is set in the open position; a movable cover for closing the housing; and a rear window, which is mounted in a sliding manner so as to move between an extracted position, in which the rear window projects from the car body, and a withdrawn position, in which the rear window is housed inside the car body.

TECHNICAL FIELD

The present invention relates to a car with a sun roof.

PRIOR ART

Patent EP1912815B1 describes a car with a sun roof, wherein the framecomprises two fixed vertical posts, which are arranged facing each otheron opposite sides of the car at a boundary zone between a passengercompartment and a rear engine compartment. The sun roof comprises a pairof rigid roof members, which are mechanically connected to the frame bymeans of respective connection members arranged at internal walls of thetwo vertical posts. A rear roof member leans against an upper wall ofthe two vertical posts when the roof is in a closed position (i.e. whenthe roof closes the top of the passenger compartment of the car).

It has been observed that the contact zone between the upper walls ofthe two vertical posts and the rear roof member is rather critical withrespect to water infiltrations, because achieving adequate sealing inthis contact zone while keeping a pleasant appearance when the roof isin an open position (i.e. when the roof is folded and arranged in a rearhousing) is complex. It is worth noting that pleasant appearance is ofthe utmost importance in a car with sun roof, because these types ofcars are chosen essentially for their appearance; furthermore, thevertical post zone is one of the most evident because it is immediatelyby the side of the door handles, and thus in the line of sight ofoccupants getting in and out of the car.

DESCRIPTION OF THE INVENTION

It is the object of the present invention to provide a sun roof which isfree from the above-described drawbacks, and in particular which is easyand cost-effective to be implemented.

According to the present invention, a car with sun roof is provided asclaimed in the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will now be described with reference to theaccompanying drawings, which show a non-limitative embodiment thereof,in which:

FIG. 1 is a diagrammatic perspective view of a car with sun roofprovided, in accordance with the present invention, in which the sunroof is set in a closed position;

FIG. 2 is a partially exploded view of the sun roof of the car in FIG.1;

FIGS. 3-7 are a series of diagrammatic side views of the car in FIG. 1,during the subsequent steps of opening the sun roof;

FIG. 8 is a diagrammatic rear view of a detail of an internal post andof an external post of the frame of the car in FIG. 1;

FIG. 9 is a diagrammatic perspective view of a closing body connected toa cover of a housing of roof members of the sun roof of the car in FIG.1;

FIG. 10 is a diagrammatic perspective view of the closing body of FIG. 8leaning against a vertical post of the car frame;

FIG. 11 is a diagrammatic perspective view of the vertical post in FIG.9 without the presence of the closing body in FIG. 8;

FIG. 12 is a diagrammatic cross-section view of a support structure of arear window of the car in FIG. 1;

FIGS. 13-17 are some diagrammatic perspective views of gaskets of someparts of the sun roof of the car in FIG. 1; and

FIG. 18 is an diagrammatic, exploded perspective view of all the gasketsof the car in FIG. 1.

PREFERRED EMBODIMENTS OF THE INVENTION

In FIG. 1, numeral 1 indicates as a whole a car having a passengercompartment 2 and an engine compartment 3, which is arranged in acentral position behind the passenger compartment 2 and is closed, by apartially transparent opening cover. A frame 4 of car 1 supports a sunroof 5, which may be set in an open position (shown in FIG. 6), in whichthe passenger compartment 2 is open, or in a closed position (shown inFIGS. 1 and 3) in which the entire passenger compartment 2 is covered bythe sun roof 5.

As shown in FIGS. 1 and 2, in order to support the sun roof 5, frame 4comprises two external vertical posts 6, which vertically project fromthe belt line of car 1 and face each other on opposite sides of car 1 ata boundary zone between the passenger compartment 2 and the enginecompartment 3.

The sun roof 5 comprises a pair of rigid roof members 7 and 8, which areessentially flat, i.e. which have a flat development free from, parts orlegs projecting from the plane, with the exception of minor longitudinaland transversal bumps needed to provide a suitable connection with theother parts of the car body. The roof members 7 and 8 are carried byframe 4, by means of a pair of support members, which are arranged, onopposite sides of the roof members 7 and 8 at internal walls of theexternal vertical posts 6 (i.e. the support members are arranged withinthe volume laterally delimited by the two external vertical posts 6). Inthe embodiment shown in the accompanying figures, each roof member 7 and8 is mechanically connected to frame 4 by means of a pair of connectionarms 9 and 10, which are arranged on opposite sides of the roof members7 and 8 themselves, and form the support members; in particular, eacharm 9 or 10 is hinged to frame 4 by means of a respective hinge which issupported both by the external vertical posts 6 and by a portion offrame 4 arranged under the posts 6, and more internally than the posts6.

In the embodiment shown in the accompanying figures, each arm 9 is“L”-shaped and has one end rigidly fixed to the roof hinge 7 and anopposite end hinged to frame 4 at a post 6 in order to rotate withrespect to the frame 4 itself about a horizontal rotation axis 11 underthe bias of an actuator device 12. Each arm 10 has a substantiallyrectilinear shape and has one end rigidly fixed to the roof member 8 andan opposite end hinged to frame 4 at a post 6 in order to rotate withrespect, the frame 4 itself about a horizontal rotation axis 13 parallelto and offset with respect to the rotation axis 11 under the bias of theactuator device 12. According to a preferred embodiment (not shown),roof member 7 and roof member 8 are connected to frame 4 at the post 6by means of an articulated quadrilateral so as to perform arototranslation instead of a simple rotation with respect to the frame 4itself; in other words, according to a preferred embodiment, the supportmembers of roof members 7 and 8 consist of articulated quadrilaterals.According to the embodiment shown in the accompanying figures, therotation axes 11 and 13 are fixed rotation axes, i.e. do not undergo anyspatial translation; if using articulated quadrilaterals, the rotationaxis 11 and the rotation axis 13 are movable, i.e. move in use parallelyto themselves.

When the sun roof 5 is set in the closed position (FIGS. 1 and 3), thetwo roof members 7 and 8 are arranged substantially horizontal andessentially coplanar to each other so as to be seamlessly arranged insequence. In particular, when the sun roof 5 is set in the closedposition (FIGS. 1 and 3), the roof member 7 is arranged in a frontposition so as to lean the front end thereof in contact with awindscreen 14 of car 1 and to arrange the rear end thereof in contactwith the front end of the roof member 8; moreover, the roof member 8 isarranged in a rear position so as to arrange the front end thereof incontact with the rear end of the roof element 7 and to arrange the rearend thereof in contact, at the back, with a rear window 15 of car 1, andlaterally -with the posts 6 of frame 4.

It is worth noting that the two roof members 7 and 8 are not directlymechanically connected but simply lean against each other when the sunroof 5 is set in the closed, position (FIGS. 1 and 3).

In FIGS. 3-7, it is apparent that the roof members 7 and 8 perform anapproximately 180° rotation about the rotation axes 11 and 13 withrespect to the posts 6 of frame 4, in order to move the sun roof 5 fromthe closed position to the open position, and vice versa.

When the sun roof 5 is set in the open position (FIG. 7), the roofmembers 7 and 8 are arranged within a housing 16, which is obtainedabove the engine compartment 3 immediately next, to posts 6 and rearwindow 15, and is closed by a cover 17 hinged at the back to rotateabout a horizontal rotation axis 18 parallel to the rotation axes 11 and13. According to a preferred embodiment, the operation ofopening/closing cover 17 is controlled by a servo actuator (not shown)of the electric or hydraulic type. Cover 17 may be hinged to frame 4 bymeans of simple hinges, or alternatively cover 17 may be connected toframe 4 by means of a pair of articulated quadrilaterals to perform arototranslation with respect to the frame 4 itself.

Preferably, cover 17 has a pair of fins 19, which are arranged onopposite sides of the cover 17, and which lean, when cover 17 is closed,against the external vertical posts 6 when cover 17 is in a closedposition of the housing 16.

In housing 16, the two roof members 7 and 8 are arranged substantiallyhorizontally one over the other; in other words, the roof members 7 and8 are vertically packed over each other in the housing 16, and inparticular roof member 7 is arranged over roof member 8 in the housing16.

In order to take the sun roof 5 from the closed position (FIGS. 1 and 3)to the open position (FIG. 7) and vice versa, the actuator device 12rotates the roof member 7 about the rotation axis 11 and rotates theroof member 8 independently from the roof member 7 about the rotationaxis 13, as shown in FIGS. 4, 5 and 6. The rotation of the two roofmembers 7 and 8 is simultaneous, i.e. the two roof members 7 and 8 arerotated, by the actuator device 12 at the same time; obviously, forobvious reasons of mechanical interference, the rotation of roof member8 must always slightly precede the rotation of roof member 7 whenopening the sun roof 5, and vice versa when closing the sun roof 5.

In order to allow the above-described actuation of the roof members 7and 8 from and to the housing 16, the rear window 15 is movableparallely to itself along a substantially vertical direction between anextracted position (shown in FIGS. 1 and 3), in which the rear window 15projects from the car body, and a withdrawn position (shown in FIGS.4-7), in which the rear window 15 is housed inside the car body in arespective containing tank 20 (diagrammatically shown in FIG. 12), whichis obtained in a support structure 21 of the rear window 15 (shown inFIG. 2 and in FIG. 12), arranged between the housing 16 of the roofmembers 7 and 8 and the passenger compartment 2. In use, the rear window15 is arranged in the withdrawn position to set the sun roof 5 from, theclosed position to the open position and to set the sun roof 5 from theopen position to the closed position, so as to avoid, any interferencewith the rotational movement of the roof members 7 and 8.

According to a preferred embodiment shown in FIG. 2, the rear window 15comprises a transparent flat panel, which is arranged substantiallyvertical (or with an appropriate inclination to avoid annoyingreflections from being generated on the rear-view mirror inside car 1)and is supported by a metal frame slidingly mounted on respective guidesto move parallely to itself between the extracted position, in which therear window 15 projects from the car body, and the withdrawn position,in which the rear window 15 is housed inside the car body in thecontaining tank 20.

When the sun roof 5 is set in the closed position, the rear window 15 isgenerally arranged in the extracted position; however, the driver coulddecide to set the rear window 15 in the withdrawn position to increaseventilation in the passenger compartment 2. When the sun roof 5 is setin the open position, the rear window 15 is generally arranged in thewithdrawn position; however, the driver could decide to set the rearwindow 15 in the extracted position to use the rear window 15 aswindbreaker and therefore reduce turbulence inside the passengercompartment 2.

The support structure 21 of the rear window 15 is supported by twointernal vertical posts 22 of frame 4 which are the lateral walls of thesupport structure 21 itself (in other words, the support structure 21 isbuilt on the two internal vertical posts 22 which laterally delimit thesupport structure 21). As shown in FIGS. 2, 8 and 10, the two internalvertical posts 22 are arranged between the external vertical posts 6 andat a given distance from the external vertical posts 6, so that a hollowspace 23, i.e. a technical space intended to accommodate functionalparts of the sun roof 5, is defined between each external vertical post6 and the corresponding internal vertical post 22 (i.e. the internalvertical post 22 arranged close to the external vertical post 6).

When cover 17 is in a closed position of the housing 16, each fin 19 ofcover 17 leans against an external side of an external vertical post 6of frame 4 and against an internal side of an internal vertical post 22of frame 4.

All the above-described movements are preferably carried out with theaid of the actuator device 12 which determines the movement of the roofmembers 7 and 8, with the aid of an actuator device (not shown) todetermine the movement of the rear window 15, and with the aid of anactuator device (not shown) to determine the movement of cover 17 of thehousing 16; such actuators are preferably of the electric type but mayalso be of the pneumatic or hydraulic type. According to a differentembodiment, it may be chosen to have some: or all of the above-describedmovements carried out manually by the driver of car 1; such a choiceobviously results in more inconvenience for the driver, but on the otherhand allows to contain costs and especially the dimensions and weight ofthe sun roof 5.

According to a different embodiment (not shown), roof member 7 issupported by roof member 8, and not by frame 4, so as to move withrespect to roof member 8 between an extended position, in which roofmember 7 is coplanar with roof member 8, and a folded position, in whichroof member 7 is packed over or under roof member 8. Roof member 7 maybe mechanically connected to roof member 8 so as to move with respect tothe roof member 8 itself between the folded position and the extendedposition, either by means of a translation, a rotation, or arototranslation. When the sun roof 5 goes from the closed position tothe open position, roof member 7 is folded either under or over roofmember 8 by means of either a translation, a rotation, or arototranslation with respect to roof member 8, and not by means of arotation about the rotation axis 11 as described above. Roof member 8 isthen rotated about the rotation axis 13 to be inserted, together withroof member 7, into the housing 16, as described above.

According to a further embodiment (not shown), roof member 8 issupported by roof member 7, and not by frame 4, so as to move withrespect to roof member 7 between an extended position, in which roofmember 8 is coplanar with roof member 7, and a folded position, in whichroof member 8 is packed either over or under roof member 7. Roof member8 may be mechanically connected to roof member 7 so as to move withrespect to the member 7 itself between the folded position and theextended position by means of either a translation, a rotation, or arototranslation. When the sun roof 5 goes from the closed position tothe open position, roof member 8 is folded either under or over roofmember 7 by means of either a translation, a rotation, or arototranslation with respect to roof member 7, and not by means of arotation about, the rotation axis 13, as described above. Roof member 7is then rotated about the rotation axis 11 to be inserted, together withroof member 8, into the housing 16, as described above.

According to a preferred embodiment, the support members of roof members7 and 8 are arranged in the two hollow spaces (therefore, in theembodiment shown in the accompanying figures, the connection arms 9 and10 are arranged in the two hollow spaces 23). In particular, the supportmembers of roof members 7 and 8 are mechanically connected to astructure consisting of the external vertical posts 6 and the internalvertical posts 22. As shown in FIG. 8, each pair of vertical posts 86and 22 (i.e. each pair consisting of an external vertical post 6 and thecorresponding internal vertical post 22) comprises a structuralconnection 24, which is vertically arranged and connected at its ends tothe two vertical posts 6 and 22 (for example, but not necessarily, bymeans of screws 25). Each structural connection 24 has both thestructural function of stiffening this zone of frame 4 (in other words,by virtue of the structural connection 24, the corresponding verticalposts 6 and 22 form a single structure), and the function of providingan anchoring point for the support members of the roof members 7 and 8(in other words, the support members of the roof members 7 and 8 arehinged to the structural connections 24).

As shown in FIGS. 1 and 3, when the sun roof 5 is in the closed,position, the rear roof member 8 covers the hollow spaces 23 on the topand leans against an upper wall 26 of each external vertical post 6 offrame 4 and against an upper wall 27 of each internal vertical post 22of frame 4.

As shown in FIG. 8, the external vertical posts 6 and the internalvertical posts 22 together also act as roll-bar if car 1 rolls over. Inparticular, the internal vertical posts 22 are higher than the externalvertical posts 6 (i.e. the upper walls 27 of the internal posts 22 arearranged higher than the upper walls 26 of the external vertical posts6); thereby, if car 1 rolls over, the external vertical posts 6primarily serve the function of transversal roll-bar (i.e. laterallyprotect the occupants of the passenger compartment 2). and the internalvertical posts 22 primarily serve the function of vertical roll-bar(i.e. protect the occupants of the passenger compartment 2 from thetop). With this regard, it is worth emphasizing the importance of thestructural connections 24, which allow to stiffen both the verticalposts 6 and 22, by connecting the vertical posts 6 and 22 to each other,and thus allow to increase both side protection (essentially ensured bythe external vertical posts 6) and upper protection (essentially ensuredby the internal vertical posts 22).

By virtue of the external vertical posts 6 being arranged more outsidethe seats, the structure consisting of the vertical posts 6 and 22ensures a better protection in the initial steps of a roll-over withrespect to the commonly adopted solutions, in which the roll-bars arenormally positioned, in axis with the seats.

The presence of higher internal vertical posts 22, which ensure upperprotection of the occupants of the passenger compartment 2, allows tomake the external vertical posts 6 shorter; such a feature is veryuseful because it allows to provide a body of car 1 which isparticularly beautiful (as mentioned above, the pleasant appearance isof the utmost, importance in a car with sun roof because these types ofcar are essentially chosen for their appearance).

As shown in FIGS. 7-9 and 10, the sun roof 5 comprises two closingbodies 28, each of which is mounted so as to be movable between anoperating position (shown in FIGS. 7 and 10), in which the closing body28 is arranged over a corresponding hollow space 23 and leans againstthe upper wall 26 of an external vertical post 6 of frame 4 and againstthe upper wall 27 of an internal vertical post 22 of frame 4, and a restposition (shown in FIGS. 3-6), which is different from the operatingposition (i.e. in the rest position, the closing body 28 is not arrangedover a corresponding hollow space 23 and does not lean against the upperwall 26 of an external vertical post 6 of frame 4, nor against the upperwall 27 of an internal vertical post 22 of frame 4).

An actuation mechanism is included, which is mechanically coupled to theclosing bodies 22, so as to move the two closing bodies 22 to theoperating position when the sun roof 5 is in the open position, and soas to move the two closing bodies 22 to the rest position when the sunroof 5 is in the closed position. According to a preferred embodiment,the actuation mechanism of the two closing bodies 22 comprises amechanical connection between the support members of the roof members 7and 8 and the closing bodies 22, so that the movement of the roofmembers 7 and 8 also determines the corresponding movement of theclosing bodies 22 (i.e. a separate actuator is not included for the twoclosing bodies 22, but the movement of the roof members 7 and 8 is usedto move the closing bodies 22). The actuation mechanism of the closingbodies 22 comprises a Bowden cable 29 (diagrammatically shown in FIG.9), which mechanically connects each closing body 28 to a correspondingsupport member of the roof members 7 and 8. Furthermore, the actuationmechanism of the closing bodies 22 comprises, for each closing body 28,an elastic element 30 (in particular a spring), which biases the closingbody 28 itself towards an operating position; each mechanical connection(i.e. each Bowden cable 29) moves the corresponding closing body 28 fromthe operating position to the rest position against the bias of theelastic element 30.

As shown in FIG. 9, the two closing bodies 22 are supported by the cover17 of the housing 16 of the sun roof 5, and in particular each closingbody 28 is arranged at the top of a fin 19 of cover 17. In the operatingposition, each closing body 28 longitudinally projects so as to protrudefrom the movable cover 17 (as shown in FIGS. 2, 7, 9 and 10), and in therest position each closing body 28 is arranged under the movable cover17 (as show in FIGS. 3-6). As shown in FIG. 9, each closing body 28 ishinged to the movable cover 17 to rotate about a rotation axis 31through an approximately 180° rotation between the operating positionand the rest position.

As shown in FIGS. 9 and 10, each closing body 28 is “L”-shaped and hasan upper wall 32 which, in the operating position, is arranged over acorresponding hollow space 23 and leans against the upper wall 26 of anexternal vertical post 6 of frame 4 and against the upper wall 27 of aninternal vertical post 22 of frame 4, and a front wall 33 which, in theoperating position, is arranged in front of the hollow space 32 andleans against a front edge 34 (shown in FIG. 11) of an external verticalpost 6 of frame 4 and against a front edge 35 (shown in FIG. 11) of aninternal vertical post 22 of frame 4.

According to a different embodiment (not shown), the two closing bodies22 are directly supported by frame 4, and in the rest position eachclosing body 28 is arranged within the corresponding hollow space 23.

According to a preferred embodiment (shown in FIG. 12), the containingtank 20 of the support structure 21 of the rear window 15 is providedwith an internal sealing gasket 36, which is arranged inside thepassenger compartment 2 and internally establishes a seal between therear window 15 and the containing tank 20, and with an external sealinggasket 37, which is arranged outside the passenger compartment 2 andexternally establishes a seal between the rear window 15 and thecontaining tank 20. According to a preferred embodiment, the externalsealing gasket 37 has a leg 38 which establishes a seal between cover 17and housing 16 (i.e. an edge of cover 17 leans against the upper leg 38of the external sealing gasket 37 to seal housing 16). According to apreferred embodiment, the external sealing gasket 37 has through drainholes 39, which establish a direct communication between the zonearranged immediately behind the rear window 15 and the interior of thecontaining tank 20; in particular, the external sealing gasket 37 of thecontaining tank 20 of the rear window 15 has at least two through drainholes 39, which are positioned on the right and left sides of thehorizontal segment of the external seal 37 itself.

A drain channel 40, which ends with a lower outlet opening obtainedthrough a lower floor of car 1 and serves the function of evacuating thewater which penetrates in the containing tank 20, originates from abottom wall of the containing tank 20. The function of the drain holes39 is to allow to drain the water which is in the zone immediatelybehind the rear window 15, and thus prevent an accumulation of water inthis zone (particularly when car 1 is downhill) which could even enterinto the passenger compartment 2 if the rear window 15 is all lowered(even unintentionally).

As shown in FIG. 13, gaskets 36 and 37 of the rear window 15 are“U”-shaped (the drain holes 39 are obviously present, only in the lowerhorizontal part of the external gasket 37 of the rear window 15). Inparticular, gaskets 36 and 37 of the rear window 15 (which are a singlemonolithic body) have a lower horizontal part which is arranged at theedge of the containing tank 20, and two vertical upper parts which arearranged on opposite sides of the horizontal lower part and areconnected to the two internal vertical posts 22. Thereby, the edge ofcover 17 between the tops of the two fins 19 leans against the leg 38 ofthe external gasket 37 of the rear window 15 to provide the sealingaction (obviously when cover 17 is in the closing position). Gaskets 36and 37 of the rear window 15, once assembled, are a single monolithicbody, which ensures the sealing action on the three sides of the rearwindow 15.

As shown in FIG. 11, each external vertical post 6 is provided with a“U”-shaped sealing gasket 41 (shown in greater detail in FIG. 14), whichseamlessly covers the external periphery of the external vertical post 6itself, i.e. (completely) covers the front edge 34 of the externalvertical post 6, (completely) covers the upper wall 26 of the externalvertical post 6, and (partially) covers a rear edge 42 of the externalvertical post 6. A front part 43 of each sealing gasket 41 which coversthe front edge 34 of the external vertical post 6 establishes a sealtogether with a window of the door, an upper part 4 4 of each sealinggasket 41 which covers the upper wall 26 of the external vertical post 6establishes a seal together with the rear roof member 8 of the sun roof5, and a rear part 45 of each sealing gasket 41 which covers the rearedge 42 of the external vertical post 6 establishes a seal together withfin 19 of cover 17.

As shown in FIG. 15, the cover 17 of housing 16 is provided with asingle sealing gasket 46 which is “U”-shaped and ends at the fins 19with two ends 47 (i.e. the cover 17 of housing 16 presses on three sidesof the single sealing gasket 46). As shown in FIG. 16, each end 47 ofthe sealing gasket 46 of cover 17 leans against the rear edge 42 of acorresponding external vertical post 6 so as to cover the portion ofrear edge 42 left free by the corresponding sealing gasket 41 of theexternal vertical post 6 itself. In other words, as shown in FIG. 16,the rear part 45 of the sealing gasket 41 of each external vertical post6 and the corresponding end 47 of the sealing gasket 46 of cover 1 arereciprocally complementary in order to cover together, withoutoverlapping, the rear edge 42 of a corresponding vertical post 6 (i.e.the end 47 of the sealing gasket 46 starts where the rear part 45 of thesealing gasket 41 ends).

As shown in FIG. 17, the rear roof member 8 is provided with a singlesealing gasket 48, which is “U”-shaped and has two lateral parts 49,which are arranged longitudinally, and a central part 50, which isarranged transversally. When roof 5 is in the closed position, each sidepart 49 of the sealing gasket 48 of the rear roof member 8 leans againstthe upper part 44 of the sealing gasket 41 of the corresponding externalvertical post 6, so that the connection between the side part 49 of thesealing gasket 48 and the upper part 44 of the sealing gasket 41 formsan impenetrable barrier. Furthermore, when roof 5 is in the closedposition, the opposite ends of the central part 50 of the sealing gasket48 of the rear roof member 8 lean against the front edge of the cover 17of housing 16 (and in particular against the top of the two fins 19 ofcover 17), so as to establish a seal together with cover 17. Finally,when roof 5 is in the closed position, the central part 50 of thesealing gasket 48 leans against the top of the two ends of the seals 36and 37 of the rear window 15 (i.e. the two ends of the gaskets 36 and 37abut against the central part 50 of the sealing gasket 48); in order toimprove the sealing action with the two ends of the gaskets 36 and 37 ofthe rear window 15, the central part 50 of the sealing gasket 48 has twolegs 51 which project so as to protrude downwards from the central part50. In other words, the central part 50 of the sealing gasket 48establishes a connection between the gaskets 36 and 37 of the rearwindow 15 and the rear parts 45 of the sealing gaskets 41, thus allowinga continuous seal to be obtained against the front edge of the cover 17of housing 16.

FIG. 18 diagrammatically shows all the gaskets of car 1; in addition tothe above-described gaskets 36, 37, 41, 46 and 48, the figure also showsa sealing gasket 52 of the roof member 7, a sealing gasket 53 of thewindscreen, and the two sealing gaskets 54 of the doors.

The above-described sealing gasket set is simple to be implemented andassembled, is particularly effective when ensuring total fluid-tightnessin the passenger compartment 2 and in the housing 16. Furthermore, theabove-described sealing gasket set has the further advantage of beingnot very “visible” (and thus of being “beautiful”) when roof 5 is in theopen position (as mentioned above, pleasant appearance is of the utmostimportance in a car with sun roof because this types of cars areessentially chosen for their appearance).

The above-described sun roof 5 has many advantages,

because it is simple and cost-effective to be implemented, and in thefolded position has extremely reduced dimensions, perfectly compatiblewith the features of a car 1 with a central or rear engine. Moreover, inall configurations of the sun roof 5, full accessibility and usabilityof the rear zone of the passenger compartment 2 located behind the seatsand generally used for stowing hand baggage is also ensured. Finally,the rear window 15 is made of glass, with apparent benefits in terms ofvisibility and acoustic insulation, allows a defrosting and/or demistingdevice with electrically heated filaments to be installed, and is ableto perform wind-breaking functions when the sun roof 5 is set in theopen position.

By virtue of its extremely small dimensions when in the folded position,the above-described sun roof 5 is particularly suited to be used in acar 1 with a central or rear engine of the type shown in theaccompanying figures; however, in the light of the several advantagesdisplayed by the above-described sun roof 5, the sun roof 5 itself mayalso be advantageously used in a car with a front engine.

Furthermore, by virtue of the presence of the closing bodies 22,adequately sealing the contact zone between the upper walls 26 of thetwo external vertical posts 6 and the rear roof member 8 is not aproblem, while keeping a pleasant appearance when roof 5 is in the openposition (as mentioned above, a pleasant appearance is of the utmostimportance in a car with sun roof because these types of cars are chosenessentially for their appearance). Indeed, when roof 5 is in the openposition, the upper walls 26 are completely covered by the closingbodies 22 which conceal all the imperfections (including the hollowspaces 23 in which the connection members of the roof members 7 and 8are housed).

1. A car comprising: a frame provided with two external vertical posts, which, project from the belt line of the car and face each other on opposite sides of the car; a passenger compartment; a sun roof, which is supported by the frame and can be set to an open position or a closed position with respect to the passenger compartment; a housing to house the sun roof when the sun roof is in the open position; a movable cover, which, closes the housing and presents a pair of fins arranged on opposite sides of the cover; and a rear window, which is mounted in a sliding manner and is configured to move between an extracted position, in which rear window projects from the car body, and a withdrawn position, in which, rear window is housed inside the car body; wherein the sun roof comprises two rigid roof members which, when the sun roof is in the closed position, are substantially horizontal and substantially coplanar to each, other so as to be seamlessly positioned one behind the other, and, when the sun roof is in the open position, are packed one on top of the other inside the housing; and wherein the roof members are fitted to the frame by a pair of support organs, which are arranged on opposite sides of the roof members; wherein each external vertical post is provided with a single “U”-shaped sealing gasket, which covers a front edge of the external vertical post so as to obtain a seal with a window of a door, completely covers an upper wall of the external vertical post so as to obtain a seal with a rear roof member of the sun roof, and partially covers a rear edge of the external vertical post so as to obtain a seal with a fin of the cover; and the cover of the housing presses, on three sides, against a single sealing gasket, which is “U”-shaped and ends in correspondence to the fins with two ends, each of which lays against the rear edge of a corresponding external vertical post, so as to cover the portion of the rear edge which is left free from the relative sealing gasket of the external vertical post.
 2. The car according to claim 1, wherein the rear window is provided with gaskets, which are “U”-shaped and present a lower horizontal part, which is arranged in correspondence to the edge of a containing tank of the rear window, and two upper vertical parts, which are arranged on opposite sides of the lower horizontal part.
 3. The car according to claim 2, wherein an internal gasket and an external gasket of the rear window, after having been assembled, build a single monolithic body, which encourages sealing on three sides of the rear window.
 4. The car according to claim 2, wherein an appendage of an external gasket of the rear window establishes a seal with the cover of the housing.
 5. The car according to claim 4, wherein an edge of the cover of the housing comprised between the tops of the two fins lays against the appendage of the external gasket of the rear window, to seal.
 6. The car according to claim 2, wherein: the frame comprises two internal vertical posts, which are arranged between the external vertical posts at a given distance from the external vertical posts themselves, so as to define, between each external vertical post and the corresponding internal vertical post, a hollow space, in which the support organs of the roof members are arranged; the two upper vertical parts of the gaskets of the rear window are connected to the two internal vertical posts; and the two fins lay against the internal vertical posts of the frame with the interposition of the two upper vertical parts of the gaskets of the rear window.
 7. The car according to claim 2, wherein: the rear roof member is provided with a single sealing gasket, which is “U”-shaped and presents two lateral parts, which are longitudinally arranged, and a central part, which is transversally arranged; when the sun roof is in the closed position, each lateral part of the sealing gasket of the rear roof member rests on the upper part of the sealing gasket of the corresponding external vertical post; and when the sun roof is in the closed position, the opposite ends of the central part of the sealing gasket of the rear roof member lay against the front edge of the cover of the housing, to seal with the cover.
 8. The car according to claim 7, wherein: the rear window is provided with gaskets, which are “U”-shaped and present a lower horizontal part, which is arranged in correspondence to the edge of a containing tank of the rear window, and two upper vertical parts, which are arranged on opposite sides of the lower horizontal part; and when the sun roof is in the closed position, the central part of the sealing gasket of the rear roof member rests on the upper side of the two ends of the sealing gaskets of the rear window.
 9. The car according to claim 1, wherein the frame comprises two internal vertical posts, which are arranged between the external vertical posts at a given distance from the external vertical posts themselves, so as to define, between each external vertical post and the corresponding internal vertical post, a hollow space, in which the support organs of the roof members are arranged.
 10. The car according to claim 9 and comprising a support structure of the rear window, which houses a containing tank and is supported by the two internal vertical posts of the frame, which constitute the lateral walls of the support structure.
 11. A car comprising: a frame provided with two external vertical posts, which project from the belt line of the car and face each other on opposite sides of the car; a passenger compartment; a sun roof, which is supported by the frame and can be set to an open position or a closed position with respect to the passenger compartment; a housing to house the sun roof when the sun roof is in the open position; a movable cover, which closes the housing and presents a pair of fins arranged on opposite sides of the cover; and a rear window, which is mounted in a sliding manner and is configured to move between an extracted position, in which rear window projects from the car body, and a withdrawn position, in which rear window is housed inside the car body; wherein the sun roof comprises two rigid roof members which, when the sun roof is in the closed position, are substantially horizontal and substantially coplanar to each other so as to be seamlessly positioned one behind the other, and, when the sun roof is in the open position, are packed one on top of the other inside the housing; and wherein the roof members are fitted to the frame by a pair of support organs, which are arranged on opposite sides of the roof members; wherein each external vertical post is provided with a single “U”-shaped sealing gasket, which completely covers a front edge of the external vertical post so as to obtain a seal with a window of a door, completely covers an upper wall of the external vertical post, so as to obtain a seal with a rear roof member of the sun roof, and partially covers a rear edge of the external vertical post so as to obtain a seal with a fin of the cover; wherein the cover of the housing presses, on three sides, against a single sealing gasket, which is “U”-shaped and ends in correspondence to the fins with two ends, each of which lays against the rear edge of a corresponding external vertical post, so as to cover the portion of the rear edge which is left free from the relative sealing gasket of the external vertical post; wherein the rear window is provided with gaskets, which are “U”-shaped and present a lower horizontal part, which is arranged in correspondence to the edge of a containing tank of the rear window, and two upper vertical parts, which are arranged on opposite sides of the lower horizontal part; wherein an internal gasket and an external gasket, of the rear window, after having been assembled, build a single monolithic body, which guarantees sealing on three sides of the rear window; wherein an appendage of an external gasket of the rear window establishes a seal with the cover of the housing; and wherein an edge of the cover of the housing comprised between the tops of the two fins lays against the appendage of the external gasket of the rear window, to seal.
 12. The car according to claim 11, wherein: the frame comprises two internal vertical posts, which are arranged between the external vertical posts at a given distance from the external vertical posts themselves, so as to define, between each, external vertical post and the corresponding internal vertical post, a hollow space, in which the support organs of the roof members are arranged; the two upper vertical parts of the gaskets of the rear window are connected to the two internal vertical posts; and the two fins lay against the internal vertical posts of the frame with the interposition of the two upper vertical parts of the gaskets of the rear window.
 13. The car according to claim 11, wherein: the rear roof member is provided with a single sealing gasket, which is “U”-shaped and presents two lateral parts, which are longitudinally arranged, and a central part, which is transversally arranged; when the sun roof is in the closed position, each lateral part, of the sealing gasket of the rear roof member rests on the upper part, of the sealing gasket of the corresponding external vertical post; and when the sun roof is in the closed position, the opposite ends of the central part of the sealing gasket of the rear roof member lay against the front edge of the cover of the housing, to seal with the cover.
 14. The car according to claim 13, wherein: the rear window is provided with gaskets, which are “U”-shaped and present a lower horizontal part, which is arranged in correspondence to the edge of a containing tank of the rear window, and two upper vertical parts, which are arranged on opposite sides of the lower horizontal part; and when the sun roof is in the closed position, the central part of the sealing gasket of the rear roof member rests on the upper side of the two ends of the sealing gaskets of the rear window.
 15. The car according to claim 11, wherein the frame comprises two internal vertical posts, which, are arranged between the external vertical posts at a given distance from the external vertical posts themselves, so as to define, between each, external vertical post and the corresponding internal vertical post, a hollow space, in which the support organs of the roof members are arranged.
 16. The car according to claim 15 and comprising a support structure of the rear window, which houses a containing tank and is supported, by the two internal vertical posts of the frame, which constitute the lateral walls of the support structure.
 17. A car comprising: a frame provided with, two external vertical posts, which project from the belt line of the car and face each other on opposite sides of the car; a passenger compartment; a sun roof, which is supported by the frame and can be set to an open position or a closed position with respect to the passenger compartment; a means for housing the sun roof when the sun roof is in the open position; a movable cover, which closes the housing and presents a pair of fins arranged on opposite sides of the cover; and a rear window, which is mounted in a sliding manner so as to move between an extracted position, in which rear window projects from the car body, and a withdrawn position, in which rear window is housed inside the car body; wherein the sun roof comprises two rigid roof members which, when the sun roof is in the closed position, are substantially horizontal and substantially coplanar to each other so as to be seamlessly positioned one behind the other, and, when the sun roof is in the open position, are packed one on top of the other inside the housing; and wherein the roof members are fitted to the frame by support means for supporting the roof members; wherein each external vertical post is provided with a single “U”-shaped sealing gasket, which covers a front edge of the external vertical post so as to obtain a seal with a window of a door, completely covers an upper wall of the external vertical post so as to obtain a seal with a rear roof member of the sun roof, and partially covers a rear edge of the external vertical post so as to obtain a seal with a fin of the cover; and the cover of the housing presses, on three sides, against, a single sealing gasket, which is “U”-shaped and ends in correspondence to the fins with two ends, each of which lays against the rear edge of a corresponding external vertical post, so as to cover the portion of the rear edge which is left free from the relative sealing gasket of the external vertical post.
 18. The car according to claim 17, wherein the rear window is provided with gaskets, which are “U”-shaped and present a lower horizontal part, which is arranged in correspondence to the edge of a containing tank of the rear window, and two upper vertical parts, which are arranged on opposite sides of the lower horizontal part.
 19. The car according to claim 18, wherein an internal gasket and an external gasket of the rear window, after having been assembled, build a single monolithic body, which encourages sealing on three sides of the rear window.
 20. The car according to claim 18, wherein an appendage of an external gasket of the rear window establishes a seal with the cover of the housing. 